* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background: linear-gradient(135deg, #0b1026, #2b1d5a);
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  width: 100%;
  height: 100%;
}

/* CENTER CONTAINER */
.center-box {
  width: 100%;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
}

/* 🔥 VERY BIG BUTTONS 🔥 */
.option-card {
  width: 90vw;              /* almost full screen */
  max-width: 520px;
  min-height: 90px;         /* BIG height */
  display: flex;
  align-items: center;
  justify-content: center;

  font-size: 32px;          /* BIG TEXT */
  font-weight: 700;

  background: rgba(255,255,255,0.18);
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: 20px;

  cursor: pointer;
  transition: all 0.2s ease;
}

.option-card:hover {
  background: rgba(255,255,255,0.28);
  transform: scale(1.03);
}

/* OVERLAY */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 10;
}

.hidden {
  display: none;
}

/* MODAL */
.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 92vw;              /* almost full screen */
  max-width: 520px;
  background: #0b1026;
  border-radius: 22px;
  z-index: 20;
  box-shadow: 0 30px 90px rgba(0,0,0,0.85);
}

/* MODAL HEADER */
.modal-header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

.modal-header span {
  font-size: 24px;
  font-weight: 700;
}

.close-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 30px;
  cursor: pointer;
}

/* MODAL BODY */
.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.modal-body input {
  width: 100%;
  padding: 20px;
  font-size: 22px;
  border-radius: 12px;
  border: none;
  outline: none;
}

.modal-body button {
  width: 100%;
  padding: 22px;
  font-size: 24px;
  font-weight: 700;
  border-radius: 14px;
  border: none;
  cursor: pointer;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  color: #fff;
}

/* 📱 EXTRA MOBILE FORCE */
@media (max-width: 480px) {
  .option-card {
    font-size: 36px;
    min-height: 110px;
  }

  .modal-body input,
  .modal-body button {
    font-size: 24px;
    padding: 24px;
  }
}